CSS border-block-color Property

Posted in CSS Tutorial

Updated on Oct 01, 2024

By Mari Selvan

👁️ 15 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

🙋 Introduction

The border-block-color property in CSS is used to set the color of the logical block borders of an element. Logical block borders refer to the top and bottom borders in a block-level context.

This property is particularly useful in writing modes where the direction of text flow can vary, such as in vertical or right-to-left layouts.

💡 Syntax

The syntax for the border-block-color property is simple, allowing you to specify one or two color values.

Syntax

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element {
  border-block-color: color;
}

Single color value: Applies the same color to both the start and end of the block.
Two color values: The first value sets the color of the start border (top in horizontal writing modes), and the second sets the color of the end border (bottom in horizontal writing modes).

🎛️ Default Value

The default value of the border-block-color property is currentcolor, which inherits the value of the element's color property.

🏠 Property Values

Value	Description
named-color	A color keyword, such as black, red, blue, etc.
hexadecimal value	A hex code representing a color, such as #ff5733.
RGB value	An RGB color value, such as rgb(0, 0, 0) for black.
HSL value	An HSL color value, such as hsl(0, 0%, 0%) for black.
currentcolor	The current value of the color property.

📄 Example

In this example, we'll set the top border color of a block element to blue and the bottom border color to green.

index.html

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>CSS border-block-color Example</title>
  <style>
    .block {
      border-style: solid;
      border-width: 4px;
      border-block-color: blue green;
    }
  </style>
</head>
<body>
  <h1>Block with Custom Border Colors</h1>
  <div class="block">
    This block has a blue top border and a green bottom border.
  </div>
</body>
</html>

🖥️ Browser Compatibility

The border-block-color property is supported in most modern browsers, including the latest versions of Chrome, Firefox, Safari, Edge, and Opera. It is recommended to test your website across different browsers to ensure consistent behavior.

🎉 Conclusion

The border-block-color property provides a convenient way to control the color of an element’s block borders, particularly in layouts where the direction of text flow varies.

By using this property, you can create visually distinct and adaptable designs that respond to different writing modes and layouts. Experiment with different color combinations to see how this property can enhance your web design.